It is urgent to solve the problems of the dramatic volume expansion and pulverization of SnO₂ anodes during cycling process in battery systems. To address this issue, we design a hybrid structure of N-doped carbon fibers@SnO₂ nanoflowers (NC@SnO₂) to overcome it in this work. The hybrid NC@SnO₂ is synthesized through the hydrothermal growth of SnO₂ nanoflowers on the surface of N-doped carbon fibers obtained by electrospinning. The NC is introduced not only to provide a support framework in guiding the growth of the SnO₂ nanoflowers and prevent the flower-like structures from agglomeration, but also serve as a conductive network to accelerate electronic transmission along one-dimensional structure effectively. When the hybrid NC@SnO₂ was served as anode, it exhibits a high discharge capacity of 750 mAh g⁻¹ at 1 A g⁻¹ after 100 cycles in Li-ion battery and 270 mAh g⁻¹ at 100 mA g⁻¹ for 100 cycles in Na-ion battery, respectively.

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解决电池系统循环过程中SnO ₂阳极体积急剧膨胀和粉化的问题迫在眉睫。为了解决这个问题，我们设计了一种N掺杂碳纤维@SnO ₂纳米花（NC @ SnO ₂）的混合结构来克服这一问题。杂化NC @ SnO ₂是通过在电纺丝得到的N掺杂碳纤维表面上水热生长SnO ₂纳米花而合成的。引入NC不仅为指导SnO ₂的生长提供了支持框架。纳米花，可以防止花状结构的团聚，而且还可以作为导电网络有效地促进电子沿着一维结构的传输。当将杂化NC @ SnO ₂用作阳极时，它在锂离子电池中循环100次后在1 A g ^-1下表现出750 mAh g ^-1的高放电容量，而在100 mA g ^{-1下表现出}270 mAh g ^-1的高放电容量。在Na离子电池中分别可循环100次。

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